МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ПРОЦЕССА ПРОТЯЖКИ ТРУБ. Matematičeskoe modelirovanie processa protâžki trub

Abstract

For investigating the strain-rate field and the stress state during the pipe-angle forming process а 3 dimensional stationary mathematical model has bееп used based оn the theory оf plastic flow. The physical range has been transformed tо the parameter's range according tо the theory оf shells. The principle of the virtual power and the modified Ritz method have been used tо specify the actual velocity field.